(-5/4)/(-3/2)-(3/4+7/8)/(-13/16)

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(-5/4)/(-3/2)-(3/4+7/8)/(-13/16)
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(-5/4)/(-3/2)-(3/4+7/8)/(-13/16)
(-5/4)/(-3/2)-(3/4+7/8)/(-13/16)

(-5/4)/(-3/2)-(3/4+7/8)/(-13/16)
(-5/4)/(-3/2)-(3/4+7/8)/(-13/16)
=(8/15)-[1又(5/8)/(-13/16)]
=(8/15)-(-2)
=2又(8/15)
=38/15

等于17/6